Look what I found - from 1995 when single sex was first coming into the NHS...
https://publications.parliament.uk/pa/ld199495/ldhansrd/vo950118/text/50118-07.htm
I should take the opportunity also to thank the great many members of the public who have written and telephoned me supporting the Bill. They come from all parts of the country. They have all given accounts of the great distress they, their relatives and friends have suffered as a result of mixed-sex wards. Every letter has been in favour of the Bill. I have them here. There are well over 200 of them.
I have been in this place (the House of Commons or the House of Lords) for 25 years, and that is the largest number of individual letters—they are all individually written—that I have ever received, even during the abortion debates of the 1970s. I imagine that the Department of Health has also received a great many letters. I cannot possibly reply to them individually, but I acknowledge their receipt, and say how pleased I am and how useful they are.
...
Many of the letters that I have received have come from qualified nurses with first-hand experience of the indignity, distress, stress, suffering, and, I fear, danger which arise from the mixed-ward system. As well as the RCN, the Patients' Association, especially Dr. Patricia Wilkie, has done extensive research on mixed-sex wards, which has shown conclusively that they are not satisfactory nursing units and that the majority of patients is opposed to such wards. The College of Health has also done work on this. Again, it is in favour of the Bill.
The National Federation of Women's Institutes has received many complaints, and has recorded its opposition to mixed-sex wards. I have had letters from individual women's institutes. Those organisations, working, as they have, so hard, have been fighting a hard and difficult battle, apparently without too much help until some elements of the national media decided to lend a hand. We should be grateful to them for that.
BBC "Woman's Hour", for example, has put on at least two serious programmes about mixed-sex wards, and the public's reaction was positively against them.
...
We should ask when and why mixed-sex wards were allowed to develop. After all, before the war, when health and hospitals were meagrely financed compared with today, mixed-sex wards would have been unthinkable. Imagine any matron of a hospital allowing mixed-sex wards. I am sure that no one here tonight can imagine that. Apparently, the wards were allowed to be introduced in the 1960s and 1970s in order to make the best use of new high technology equipment. I find that reasoning quite unacceptable. There is more to nursing and medical treatment than high-tech equipment. The state of mind of the patient must be considered and an anxious patient can have his or her recovery seriously retarded by that anxiety.
Furthermore, many people who have never shared a house let alone a bedroom with a person of the opposite sex suddenly find themselves sharing bedroom accommodation in mixed-sex wards and sharing toilet and lavatory facilities without locks on doors. People of the opposite sex wander around half naked, having embarrassing treatments if not in sight certainly within sound.
...
It is clear that NHS patients are not being treated with the respect and consideration to which they are entitled. I fear that they are too often treated as though they are the recipients of charitable services rather than as part owners of their National Health Service. We must always remember that. We must understand that the NHS belongs to the people and that when they are patients in hospital they are entitled to have their dignity and choices respected as well as first-class nursing and medical treatment. This cannot be done unless people are given the right to be treated in single-sex wards. That is fundamental to the maintenance of patients' dignity and choice.
...
As has been said, there is very strong support for this legislation. I did not realise how strongly people felt about this matter until I asked around.